Blimey, that is impressive! I run part of my route on a path next to the beach and there are a few bits which are under a thick layer of sand - I HATE running on them and find it impossibly hard work. I dread to even think what a proper beach run would be like, let alone for 4k! Well done!

Thankyou. I usually run on the path as well, it's flat but gravelly. The beach seemed a good idea with the dogs and my daughter ran barefoot, but I think it will be an occasional thing. When it's very hot and we can have a paddle afterwards.

Sand running I found was very hard on all my joints, have tried it with bare feet too. It's not something I would do a long distance of until more used to it. It jars knees and ankles when it sinks suddenly beneath your feet, cant resist the odd short run when I get the chance though. Enjoy but be cautious too.